Keymap overriding broken after 0.11 migration

[fcoury]

I have Ctrl+L usually assigned to moving to the right panel on tmux:

return {
    "alexghergh/nvim-tmux-navigation",
    lazy = false,
    config = function()
        local nvim_tmux_nav = require("nvim-tmux-navigation")
        nvim_tmux_nav.setup({
            disable_when_zoomed = true, -- defaults to false
        })

        vim.keymap.set("n", "<C-l>", nvim_tmux_nav.NvimTmuxNavigateRight)
        vim.keymap.set("n", "<C-j>", nvim_tmux_nav.NvimTmuxNavigateDown)
        vim.keymap.set("n", "<C-k>", nvim_tmux_nav.NvimTmuxNavigateUp)
        vim.keymap.set("n", "<C-h>", nvim_tmux_nav.NvimTmuxNavigateLeft)
    end,
}

But I was always able to overrride it when in insert mode and with a suggestion pending on copilot.lua:

return {
    {
        "zbirenbaum/copilot.lua",
        cmd = "Copilot",
        event = "InsertEnter",
        config = function()
            require("copilot").setup({
                suggestion = {
                    enabled = true,
                    auto_trigger = true,
                    keymap = {
                        accept = "<C-l>",
                        next = "<M-]>",
                        prev = "<M-[>",
                    },
                },
            })
        end,
    },
}

Does anyone know why this would break and if it's possible to fix it?

[fcoury]

Minimal repro minimal_init.lua:

local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
	vim.fn.system({
		"git",
		"clone",
		"--filter=blob:none",
		"https://github.com/folke/lazy.nvim.git",
		"--branch=stable",
		lazypath,
	})
end
vim.opt.rtp:prepend(lazypath)

require("lazy").setup({
	{
		"zbirenbaum/copilot.lua",
		event = "InsertEnter",
		config = function()
			require("copilot").setup({
				suggestion = {
					enabled = true,
					auto_trigger = true,
					keymap = {
						accept = "<C-l>",
					},
				},
			})
		end,
	},
})

vim.opt.compatible = false
vim.opt.termguicolors = true 

nvim -u /tmp/minimal_init.lua /tmp/minimal_init.lua